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DOI | 10.1073/pnas.1808101115 |
Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition | |
Tartese, Romain1; Chaussidon, Marc2; Gurenko, Andrey3; Delarue, Frederic4; Robert, Francois5,6 | |
2018-08-21 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:34页码:8535-8540 |
文章类型 | Article |
语种 | 英语 |
国家 | England; France |
英文摘要 | Dust grains of organic matter were the main reservoir of C and N in the forming Solar System and are thus considered to be an essential ingredient for the emergence of life. However, the physical environment and the chemical mechanisms at the origin of these organic grains are still highly debated. In this study, we report high-precision triple oxygen isotope composition for insoluble organic matter isolated from three emblematic carbonaceous chondrites, Orgueil, Murchison, and Cold Bokkeveld. These results suggest that the O isotope composition of carbonaceous chondrite insoluble organic matter falls on a slope 1 correlation line in the triple oxygen isotope diagram. The lack of detectable mass-dependent O isotopic fractionation, indicated by the slope 1 line, suggests that the bulk of carbonaceous chondrite organics did not form on asteroidal parent bodies during low-temperature hydrothermal events. On the other hand, these O isotope data, together with the H and N isotope characteristics of insoluble organic matter, may indicate that parent bodies of different carbonaceous chondrite types largely accreted organics formed locally in the protosolar nebula, possibly by photochemical dissociation of C-rich precursors. |
英文关键词 | carbonaceous chondrites organic matter oxygen isotopes protosolar nebula secondary ion mass spectrometry |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442351000043 |
WOS关键词 | MOLECULAR-STRUCTURE ; ORGUEIL METEORITE ; GAS-PHASE ; MATTER ; MURCHISON ; ALLENDE ; DEUTERIUM ; HYDROGEN ; FRACTIONATION ; HETEROGENEITY |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204969 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Manchester, Sch Earth & Environm Sci, Manchester M13 9PL, Lancs, England; 2.Univ Paris Diderot, CNRS UMR 7154, Inst Phys Globe Paris, Univ Sorbonne Paris Cite, F-75238 Paris, France; 3.Univ Lorraine, Ctr Recherches Petrog & Geochim, UMR 7358, F-54501 Vandoeuvre Les Nancy, France; 4.Univ Paris 06, Sorbonne Univ, CNRS, Ecole Prat Hautes Etud,Paris Sci & Lettres,UMR Mi, Paris, France; 5.Univ Paris 06, Museum Natl Hist Nat, Sorbonne Univ, Inst Mineral Phys Mat & Cosmochim,CNRS, F-75005 Paris, France; 6.Inst Rech Dev, F-75005 Paris, France |
推荐引用方式 GB/T 7714 | Tartese, Romain,Chaussidon, Marc,Gurenko, Andrey,et al. Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(34):8535-8540. |
APA | Tartese, Romain,Chaussidon, Marc,Gurenko, Andrey,Delarue, Frederic,&Robert, Francois.(2018).Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(34),8535-8540. |
MLA | Tartese, Romain,et al."Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.34(2018):8535-8540. |
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